Greenheck IG / IGX (464104 IOM) (Pre-2009) - Manual (Page 7)

7
Installation - Venting for Outdoor Units
WARNING!
Do not install units in locations where flue products can be drawn into adjacent building openings
such as windows, fresh air intakes, etc. Distance from vent terminal to adjacent public walkways,
adjacent buildings, operable windows, and building openings shall conform with the local codes. In the
absence of local codes, installation shall conform with the National Fuel Gas Code, ANSI Z223.1, or the
CAN/CGA B-149 Installation Codes.
WARNING!
The following guidelines must be followed for all outdoor units:
1. Building materials that will be affected by flue gases should be protected.
2. Maintain minimum horizontal clearance of 4 feet from electric meters, gas meters, regulators,
and relief equipment. In Canada, the minimum clearance is 6 feet.
3. The combustion blower discharge on outdoor units must be located a minimum of 42 inches
from any combustible materials.
4. Do not modify or obstruct the combustion air inlet cover or the combustion blower
weatherhood.
5. Do not add vents other than those supplied by the manufacturer.
6. During the winter, keep the unit clear of snow to prevent any blockage of the combustion
venting.
NOTE!
Clearances from combustible material for indoor units are determined by the National Fuel Gas Code
and/or other local codes.
Step 1 Follow Guidelines
All of the following guidelines must be followed when installing the unit.
Step 2 Install Stack (Optional)
Clearance may require an exhaust stack. Install an exhaust stack as needed to the exhaust connection on the
unit. Install a vent terminal on the exhaust pipe.
Installation